worthy vs worthful

worthy is a noun but worthful is not a noun.

Word	Noun	Adjective	Verb	Adverb
worthy	Yes	Yes	No	No
worthful	No	Yes	No	No

worthy (noun)	worthful (noun)
an important, honorable person (word is often used humorously)

worthy (adjective)	worthful (adjective)
having worth or merit or value; being honorable or admirable	having worth or merit or value
worthy of being chosen especially as a spouse
having qualities or abilities that merit recognition in some way